COMPOSITE NANOPARTICLES
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United States of America Patent
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Issued Date -
Mar 4, 2010
app pub date -
Aug 27, 2008
filing date -
Aug 27, 2008
priority date (Note) -
Abandoned
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Abstract
A composite nanoparticle includes a nanoparticle of mineral oxide and a shell of a transition metal oxide. The mineral oxide may be silica, alumina, or a mixture of such materials, and the shell of transition metal oxide at least partially surrounds the nanoparticle of mineral oxide. Methods of preparation include reacting a solution comprising a salt of a transition metal with a nanoparticle of the mineral oxide in the presence of a reducing agent and an organic stabilizing agent; drying the resulting mixture to form a dried mixture; and annealing the dried mixture to form the composite nanoparticle.
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